<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title></title>
    <link href="./outer.css" rel="stylesheet">
  </head>
  <body>
  <div class="parent">
    <p>123</p>
    <p>456</p>
    <p>789</p>
    <div>
      <p>123</p>
      <p>456</p>
      <p>789</p>
      <p>qwe</p>
    </div>
  </div>
  </body>
</html>
